348  
FNUS73 KABR 040237  
FWSABR  
 
SPOT FORECAST FOR HELGESON RX...SD GFP  
NATIONAL WEATHER SERVICE ABERDEEN SD  
937 PM CDT TUE JUN 3 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON JUNE 04.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
HIGH PRESSURE BUILDS IN FOR WEDNESDAY. THIS MEANS  
GENERALLY LIGHT AND VARIABLE WINDS. HOWEVER, THE PRIMARY COMPONENT  
ALOFT WILL BE WEST TO SOUTHWEST WHICH COULD RESULT IN A FEW GUSTS  
AS HIGH AS 20 MPH IN THE AFTERNOON ON THE UPSLOPE SIDE OF THE  
COTEAU.  
   
WEDNESDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).  
CWR.................2 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF LIGHTNING.1 PERCENT.  
MAX TEMPERATURE.....AROUND 72.  
MIN HUMIDITY........32 PERCENT.  
WIND (20 FT)........WEST WINDS 6 TO 9 MPH.  
MIXING HEIGHT.......5200-7300 FT AGL.  
TRANSPORT WINDS.....WEST 8 TO 9 MPH.  
SMOKE DISPERSAL.....POOR (36700 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (58200 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........27 37 42 58 64 76 69  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 10 10 10  
CHC OF LTNG (%).0 0 0 0 0 0 0  
TEMP............67 69 70 71 71 72 71  
RH..............41 38 35 32 34 32 33  
20 FT WIND DIR..W W W W SW W W  
20 FT WIND SPD..6 7 7 7 8 8 9  
20 FT WIND GUST.10 12 13 14 14 15 15  
MIX HGT (KFT)...5.2 6.3 6.2 6.5 6.9 7.3 6.3  
SMOKE DISPERSAL.PR FR FR FR FR FR FR  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING  
PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (55-65 PERCENT).  
CWR.................2 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF LIGHTNING.6 PERCENT.  
MIN TEMPERATURE.....AROUND 49.  
MAX HUMIDITY........86 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 8 MPH SHIFTING TO THE  
SOUTH AROUND 5 MPH AFTER 3 AM.  
MIXING HEIGHT.......100-5000 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 13 MPH.  
SMOKE DISPERSAL.....FAIR (49900 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (300 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........68 66 57 47 38 38 37 37 45 53 61 69  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10  
CHC OF LTNG (%).0 10 10 10 0 0 0 10 10 10 10 10  
TEMP............70 70 66 62 59 58 56 55 53 52 50 51  
RH..............36 38 47 54 60 64 68 70 74 78 86 83  
20 FT WIND DIR..W SW SW SW SW SW SW SW SW SW S S  
20 FT WIND SPD..8 8 6 5 6 6 5 5 5 5 5 5  
20 FT WIND GUST.14 13 10 9 8 8 8 8 8 8 8 8  
MIX HGT (KFT)...5.0 3.6 1.3 0.9 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.1  
SMOKE DISPERSAL.FR PR PR PR PR PR PR PR PR PR PR PR  
 

 
FORECASTER...WISE  
REQUESTED BY...BRETT BLANK  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2515312.0/ABR  
.DELDT 06/03/25  
.FORMATTERVERSION 2.0.0  
.EMAIL BRETT.BLANK@STATE.SD.US  
 
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